buy Api&Intermediate

jthan123
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Rejestracja: 5 maja 2019, o 07:50

buy Api&Intermediate

Post autor: jthan123 » 5 maja 2019, o 07:53

Product NameChymotrypsin
Source: Bovine pancreas
Appearancewhite crystalline powder
Storage SituationStored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.
Shelf LifeTwo years when properly stored
Odorodorless
Test itemsStandard
CharacterWhite or off-white crystalline powder or amorphous powder
IdentificationAppear purple red
pH5.5~7.0
Clarity and color of the solutionSolutions should be clear, colorless or almost colorless
Trypsin≤1%
Loss on drying≤5.0%
Residue on ignition≤2.5%
Total amount of aerobe≤1000CFU/g
Molds and yeast count≤100CFU/g
Escherichia coliNot detectable
SalmonellaNot detectable
Pseudomonas aeruginosaNot detectable
Staphylococcus aureusNot detectable
Potency determination It contains NLT 1000 USP Chymotrypsin Units/mg, calculated on the dried basis
Assay90.0%~110.0%
Activity≥1000u/mg
Introduction
Chymotrypsin is also called chymotrypsinogen.
Chymotrypsin is the endopeptidase extracted and separated from the fresh pancreas of cows (or pigs).
Primary structure and spatial structure of α- Chymotrypsin have been clearly explained, which is a single peptide chain composed of 245 amino acid residues, with 5 pairs of disulfide linkage in the molecule.
Chymotrypsin is white and light yellow crystal or amorphous powder, and easily soluble in the water, but insoluble in organic solvent. Relative molecular mass is 24000, and the optimum PH is 8~9.
Chymotrypsin is stable at a dry state, but will be quickly deactivated in water solution, most stable in the water solution with PH3~4. When it acts on the protein, Chymotrypsin will hydrolyze the peptide bond formed by the carboxyl of L-tyrosine and L-phenylalanine in priority
Function:
Thinning the viscous sputum, make it easy to expectoration, are effective both in purulent and non purulent sputum. Can also be used for wound healing after trauma or surgery.buy Api&Intermediate
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